$\int\left(e^x+2x\right)\:dx$

$\int\frac{\left(-3x^3+x^2-3x+2\right)}{x\left(x-2\right)\left(x^2+3\right)}dx$

$a^{-5}a^7a^8$

$\lim_{x\to0}\left(7\left(cscx-\frac{1}{x}\right)\right)$

$\int\frac{2x^2}{\left(2x+1\right)^2}dx$

$6-3n^2+6n^2+2$

$\int\left(\frac{-3x+13}{\left(x+5\right)\left(x-2\right)}\right)dx$